Sand-handling machine.



H. P. MACDONALD & H. C. PARKER.

SAND HANDLING MACHINE.

APPLICATION TILED JUNE 16, 1914.

Patented Feb. 9, 1915.

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H. P. MACDONALD & H.' G. PARKER.

SAND HANDLING MACHINE.

APPLICATION TILED JUNE 16,1914v 1,127,472, Patented Feb. 9, 1915.

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INV NTORS ATTORNEYS 1HE NORRIS PETERS 60., PHOTO-L|THO.. WASHING IGN- D.C.

H. P. MACDONALD 8: H. C. PARKER.

SAND HANDLING MACHINE.

APPLICATION FILED JUNE 16, 1914 1, 1 27,472. Patented Feb. 9, 1915.

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HARRY P. MACDONALD, OF MONTCLAIR, AND HENRY C. PARKER, 0F ELIZABETH, NEWJERSEY, ASSIGNORS TO THE SNEAD & CO. IRON WORKS, 0F JERSEY CITY, NEWJERSEY, A CORPORATION OF NEW JERSEY.

SAND-HANDLING MACHINE.

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Application filed June 16, 1914.

To all whom it may concern:

Be it known that we, HARRY P. MACDON- ALD and HENRY C. PARKER, bothcitizens of the United States, residing, respectively, at Montclair, inthe county of Essex and State of New Jersey, and at Elizabeth, in thecounty of Union and State of New Jersey, have invented certain new anduseful Improvements in Sand-Handling ltlachines, of which the followingis a specification.

This invention relates to a sand handling machine for use in sandmolding operations and it has reference particularly to a machine forshaking out and riddling sand from a flask or other receptacle after amold has been poured and the casting removed. Among the chief objects ofthe invention are the provision of an improved shake-out apparatus; theprovision of improved sandriddling apparatus; the provision of improvedmeans for actuating the shake-out and the riddle; and in general theprovision of an improved arrangement of sand handling apparatus wherebythe sand is shaken out of a flask and riddled over a dumping box orother form of container for re-use.

The foregoing together with such other objects as may hereinafterappear, or are incidental to our invention, we obtain by means of aconstruction illustrated in pre ferred form in the accompanying drawingswherein Figure 1 is a side elevation of our improved machine showing theshake-out mechanism in raised position; Fig. 2 is a plan view of theapparatus; Fig. 3 is an end elevation of Fig. 2; Figs. 1- and 5 aredetail views showing the operative positions of certain of the parts;Figs. 6 and 7 are views similar to Figs. 4 and 5, but illustrate amodified form of our invention; Figs. 8 and 9 are diagrammatic viewsindicating the operation of certain of the parts; Figs. 10 and 11 arerespectively a plan and an end elevation of a detail of our invention;and Fig. 12 is a side elevation of another detail.

Referring to Figs. 1, 2 and 3, it will be seen that our machinecomprises a base block 7 at one end of which is arranged a table 8, towhich is bolted the operating mechanism comprising a motor 9, agearreduction device 10, and a crank shaft 11. Mounted on the base block7 are four pedestals 12 arranged in pairs, one pair being Specificationof Letters Patent.

Patented Feb. 9, 1915.

Serial No. 845,339.

located adjacent the table 8 and the other pair at the opposite end ofthe base block. The pedestals are connected and braced by cross rods 13and longitudinal side plates 14, the whole constituting an open framework. A horizontally reciprocating sand riddle, comprising a frame-workl5 and a screen 16 is mounted in the upper portion of this openframe-work in the following manner: At the four corners of the framework15 are extensions or Outriggers 17, to

each of which is pivoted a supporting rod 18, the supporting rods inturn being pivoted to bearings 19 supported from the base block. It willbe seen that the supporting means are so arranged that the riddle can bereciprocated in the frame-work. The means for reciprocating the riddleis a connecting rod 20, one end of which is fastened to the crank shaft11 and the other end pivotally connected to the end of the framework 15.

Supported on the open frame-work above the sand riddle is a shake-outframe or saddle A which is adapted to support a flask 26. The shake-outsaddle comprises a rectangular frame-work composed of end timbers 27,four castings 28 arranged at the ends of the timbers, and side plates 29which are bolted o1 riveted to the castings 28. The shake-out saddle issupported against lateral displacement at the ends by means of the lugs30 projecting up from the pedestals l2 and against which the castings 28abut, as will be seen on inspection of Figs. 2 and 3. VJ hen the machineis idle, the castings 28 rest on the top faces of the pedestals 12 asindicated at 31 in Fig. 3. The shake-out saddle is also supportedagainst displacement by means of the pins 32 which are mounted in theside plates 29, at substantially the central portion thereof, and whichproject through slotted plates or clips 33 fastened to the side-plates14 of the open frame-work. The sandvis shaken out of the flask 26 byraising and dropping the saddle A. As the saddle is dropped, it impactsat the ends against the tops of the respective pedestals withconsiderable force and jolts the sand out of the flask. The mechanismfor imparting this motion to the saddle will now be described.

Adjacent the top of each pedestal 12 is an inwardly projecting lug 34and on the inner face of each casting 28 is a similar lug 35. At eachcorner of the machine is a toggle B comprising a link 36 and a link 37respectively pivoted to the lugs 34 and 35 at one end, and to each otherat the opposite end. Extending transversely of the sand riddle,substantially at its central part thereof, is a rod 38 which is securelyheld in place by means of the brackets 39 fastened to the top of theframework 15. (See Figs. 10 and 11.) On each side of the saddle is apair of connecting rods 40 and 41 which are pivoted at their inner endsto the rod 38 and at their outer ends to the central pins 42 of thetoggle B, the outer ends of the connecting rods having slots 43 in whichpins 42 work. The operation is as follows: Since the rod 38 is fixed tothe frame of the sand riddle, the rods 40 and 41 will operate thetoggles when the riddle is'reciprocated. For example, if the riddle ismoving to the right from the position indicated in Fig. 1, theconnecting rods 40 and 41 will be moved with it, and when the links 36and 37 of the toggles are drawn out past center, the pins 42 are free toslip to the right hand ends of the slots in the rods and the saddle willdrop with a jolt. The parts have then assumed the position indicated inFig. 8. On the return movement of the riddle, the connecting rods willstraighten out the toggles and again raise the saddle. As the movementcontinues, the toggles will be drawn past center, the pins 42 will slipin the slots and the saddle will drop by the action of gravity andimpact on the pedestals in the manner just described. The operation ofthe links will be clear on inspection of Figs. 8 and 9.

It will be seen from the foregoing that the flask will be raised anddropped with a jolt which thoroughly breaks up the sand in the flask anddischarges it onto the reciprocating riddle, where it is further brokenup and shifted through the screen. The mechanism is efficient and butone operating means is necessary for actuating both the shake-out saddleand the reciprocating riddle. After the sand has been shaken out andriddled, it is in condition for re-use. Any kind of transfer mechanismmay be located beneath the riddle, but we prefer to provide a dumpingbox 44 such as shown in the drawings. The mechanism for handling thedumping box will now be described.

Referring to Figs. 1 and 3, it will be seen that we have provided a pairof tracks 45 Which extend transversely of the frame work, one beingarranged adjacent each end thereof. Adjacent their inner ends the tracks45 are pivoted to the struts 46, which extend transversely across thebase block. The outer ends of the tracks 45 are raised and loweredbymeans of cam members 47 keyed to the rod 48 which is suitably supportedon a base plate 49. A handle 50 is provided for turning the rod 48. Thedumping box 44 is placed in a truck 51 which rides upon the track 45.When the outer ends of the tracks 45 are raised by the cams 47, thetruck 51 rolls down the tracks into the lower part of the open frameworkand assumes a position beneath the riddle, and when the outer ends ofthe tracks 45 are lowered, the truck 51 and dumping box roll clear ofthe machine, permitting the dumping box to be removed by any desirabletransfer means, such, for example, as a hoist.

In order to prevent the sand above the riddle from discharging at theends of the machine as the riddle is reciprocated, we provide ballleplates 52, one of such plates being bolted between the pairs ofpedestals at points adjacent to the ends of the riddle. It will be notedthat the baffle plates are disposed at an angle so as to discharge anysandthat may be thrown out by the riddle into the dumping box.

Referring now to the modification shown in Figs. 6 and 7,'it will beseen that a slightly modified form of toggle means is substituted forthat previously described. In the construction shown in these figures, apair of links 53 and 54 are provided at the corners of the saddle frame,the links 53 being pivoted to the lugs 34 formed on the pedestals 12.The links are pivoted together, but the upper end of the link 54 isfree. The connecting rods 40 and 41 are connected to extensions 55 ofthelinks 53, and the links 54 are spring-held in the position shown in Fig.6 by means of the springs 56 fastened to the framework 15 of the riddle.The castings 28 are provided with rollers 57 against which the free endsof the links 54 take in certain positions. Assuming that the parts atthe right hand end of the machineare in the position shown in Fig. 6,and that the riddle is moving to the left, the links 53 and 54 will bedrawn out and the distance etween their ends shortened until finally thesprings 56 snap the links 54 into position with their upper endsengaging the un der faces of the rollers 57. Now assuming that themovement of the riddle is reversed, and it moves to the right the links53 and 54 will be straightened out and the right hand end of the saddleframe will be elevated. As this movement continues, the abutments 58 seeFig. 12) on the links 54 take against the sides of the castings28 andthe ends of the links 54 are thrust from beneath the rollers 57, therebypermitting the raised end of the saddle to drop. As this. movement tothe right takes place, the toggles at the left hand end of the frame aredrawn out and the links 54 are snapped in place, and when the movementis reversed, they will raise that end of the saddle and allow it to dropas already described. It will be seen that the ends of the saddle arealternately raised and dropped.

e claim:

1. A machine of the class described comprising in combination a movableriddle, a shake-out frame or saddle, a flask supported on the saddleabove the riddle, and means for operating the shake-out saddle directlyconnected with the riddle whereby when the latter is moved the saddle isoperated.

2. A machine of the class described comprising in combination, an openframework, a riddle in said framework, a flask supported on theframework above the riddle, a transfer receptacle located in theframework beneath the riddle in position to receive the sand fromtheriddle, and means for moving the receptacle.

3. An apparatus of the class described comprising in combination animpact membcl', a shake-out saddle, a flask supported on said saddle,and means adapted to cause the saddle to impact on the impact member tojolt the sand out of the flask.

4. An apparatus of the class described comprising in combination animpact member, a shake-out saddle, a flask supported on said saddle, andmeans for raising and lowering the saddle to cause it to impact on saidmember and jolt the sand out of the flask.

5. An apparatus of the class described comprising in combination, areciprocating riddle, a shake-out mechanism adapted to support a flaskabove the riddle, means for raising and lowering said mechanism, aflask, and means against which the shake-out mechanism impacts whenlowered to jolt the sand from the flask.

6. An apparatus of the class described comprising in combination, areciprocating riddle, a shakeout mechanism adapted to support a flaskabove the riddle, a flask, toggle members for raising and lowering theshake-out mechanism, and means whereby the reciprocation of the riddleactuates the toggle members.

7. An apparatus of the class described comprising in combination. areciprocating riddle, a shake-out mechanism adapted to support a flaskabove the riddle, a flask, toggle members for raising and lowering theshake-out mechanism, and means whereby the reciprocation of the riddleactuates the toggle members to raise and drop the shakeout mechanism.

8. An apparatus of the class described comprising in combination, areciprocating riddle, a shake-out mechanism adapted to support a flaskabove the riddle, a flask, toggle members for raising and lowering theshake-out mechanism, and means for connecting the toggle members to theriddle so that the operation of the riddle actuates the toggles.

9. An apparatus of the class described comprising in combination, aframe, a reciprocating riddle therein, a shake-out mechanism forsupporting a flask over the riddle, a flask carried thereby, togglemembers which engage the frame and the shake-out mechanism, means foractuating the riddle, and connections between the toggle members and theriddle whereby when the latter is reciprocated the opposite ends of theshake-out mechanism are alternately raised and lowered.

10. An apparatus of the class described comprising, in combination, areciprocating riddle, a shake-out mechanism adapted to support a flaskabove the riddle, a flask, means for raising and lowering the shakeoutmechanism, and means whereby the reciprocation of the riddle actuatesthe means for raising and lowering the shake-out mechanism.

11. A machine of the class described comprising in combination ahorizontally reciprocating riddle, a vertically movable shakeout saddle,a flask supported on the saddle above the riddle, and operating meansfor the saddle connected to the reciprocating riddle and transmitting asubstantially vertical movement to the saddle whereby to shake out thesand therefrom.

12. A machine of the class described comprising in combination an openframework, a substantially vertically movable shake-out saddle mountedin the frame, a flask carried on said saddle, a horizontallyreciprocating riddle mounted in the frame beneath the saddle, and meansfor raising and lowering the saddle.

13. A machine of the class described comprising in combination an openframework, a substantially vertically movable shake-out saddle mountedin the frame, a flask carried on said saddle, a horizontallyreciprocating riddle mounted in the frame beneath the saddle, means forraising and lowering the saddle, a receptacle beneath the riddle, and aguard means at each end of the frame adjacent the ends of the riddle andextending transversely of the line of movement thereof adapted todeflect the sand discharged by the riddle into the receptacle.

In testimony whereof we have hereunto signed our names in the presenceof the two subscribed witnesses.

HARRY P. MACDONALD. HENRY C; PARKER. Witnesses A. C. GREENLEE, ANeUs S.MACDONALD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

